{"id":15426,"date":"2024-04-01T08:00:35","date_gmt":"2024-03-31T23:00:35","guid":{"rendered":"https:\/\/www.waseda.jp\/inst\/wias\/?p=15426"},"modified":"2025-04-01T10:39:27","modified_gmt":"2025-04-01T01:39:27","slug":"%e7%a7%8b%e5%b1%b1-%e5%be%b9-2-6-2-5-25","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/inst\/wias\/other-en\/2024\/04\/01\/15426\/","title":{"rendered":"SHIRAI, Tatsuhiko"},"content":{"rendered":"
Name<\/h5>\n

SHIRAI, Tatsuhiko<\/p>\n

Degree<\/h5>\n

PhD, Science<\/p>\n

HP (URL)<\/h5>\n

https:\/\/sites.google.com\/view\/tatsuhiko-shirais-websitege\/home<\/a><\/p>\n

Status<\/h5>\n

Associate Professor<\/p>\n

Research Topic<\/h5>\n

Research on non-adiabatic quantum computation and its application<\/p>\n

This research focuses on exploring the performance limits of non-adiabatic quantum computation and its application. Since the operation time of current quantum computers is severely restricted due to errors, it is challenging to develop quantum algorithms that efficiently work within a short operation time. This study develops a fast ground-state generation method based on non-adiabatic quantum computation and offers effective solutions across various fields such as combinatorial optimization and quantum chemistry.<\/p>\n

Monthly Spotlight<\/h5>\n

[Monthly Spotlight] is focusing on a researcher to introduce his\/her research
\nToward the practical applications of quantum technology<\/a><\/p>\n

Education and Academic Employment<\/h5>\n

Education<\/strong><\/p>\n\n\n\n\n\n
2013-2016<\/td>\nDepartment of Physics, Graduate School of Science, The University of Tokyo (Doctor)<\/td>\n<\/tr>\n
2011-2013<\/td>\nDepartment of Physics, Graduate School of Science, The University of Tokyo (Master)<\/td>\n<\/tr>\n
2007-2011<\/td>\nDepartment of Physics, Faculty of Science, The University of Tokyo (Bachelor)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Academic Employment<\/strong><\/p>\n\n\n\n\n\n\n\n\n
2020-2024<\/td>\nAssistant professor, Department of Computer Science and Communications Engineering, Waseda University<\/td>\n<\/tr>\n
2019-2020<\/td>\nResearcher, Green Computing Systems Research Organization, Waseda University<\/td>\n<\/tr>\n
2017-2019<\/td>\nResearcher, The Institute for Solid State Physics, The University of Tokyo<\/td>\n<\/tr>\n
2016<\/td>\nResearcher, Advanced Institute for Materials Research, Tohoku University<\/td>\n<\/tr>\n
2013-2016<\/td>\nJapan Society for the Promotion of Science, Research Fellowship for Young Scientists (DC1)<\/td>\n<\/tr>\n
2012-2016<\/td>\nAdvanced Leading Graduate Course for Photon Science<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Fields of Research Interests<\/h5>\n

Nonequilibrium statistical physics, Quantum computing<\/p>\n

Academic Publications<\/h5>\n
    \n
  • T. Mori, Shirai<\/u>, \u201cSymmetrized Liouvillian Gap in Markovian Open Quantum Systems\u201d, Physical Review Letters 130<\/strong> 230404 (2023).<\/li>\n
  • Shirai<\/u>, N. Togawa, \u201cSpin-Variable Reduction Method for Handling Linear equality constraints in Ising machines\u201d, IEEE Transactions on Computers 72<\/strong> 2151 (2023) .<\/li>\n
  • B. K. Chakrabarti, H. Leschke, P. Ray, Shirai<\/u>, and S. Tanaka, \u201cQuantum annealing and computation: challenges and perspectives\u201d, Phil. Trans. Roy. Soc. A Math. Phys. Eng. Sci. 381<\/strong> 2241 (2023).<\/li>\n
  • Shirai<\/u>, N. Togawa, \u201cMulti-spin-flip engineering in an Ising machine\u201d, IEEE Transactions on Computers 72<\/strong> 759 (2022).<\/li>\n
  • K. Tamura, Shirai<\/u>, H. Katsura, S. Tanaka, N. Togawa, \u201cPerformance comparison of typical binary-integer encodings in an Ising machine\u201d, IEEE Access 9<\/strong> 81032 (2021).<\/li>\n
  • Shirai<\/u>, T. Shu, \u201cExact bounds for dynamical critical exponents of transverse-field Ising chains with a correlated disorder\u201d, Annals of Physics 435<\/strong> 168483 (2021)<\/li>\n
  • H. Nakano, Shirai<\/u>, T. Mori, \u201cTensor network approach to thermalization in open quantum many-body systems\u201d, Physical Review E 103<\/strong> L040102 (2021).<\/li>\n
  • T. Mori, Shirai<\/u>, \u201cResolving a Discrepancy between Liouvillian Gap and Relaxation Time in Boundary-Dissipated Quantum Many-Body Systems\u201d, Physical Review Letters 125<\/strong> 230604 (2020).<\/li>\n
  • Shirai<\/u>, S. Tanaka, N. Togawa, \u201cGuiding principle for minor-embedding in simulated-annealing-based Ising machines\u201d, IEEE Access 8<\/strong> 210490 (2020).<\/li>\n
  • Shirai<\/u>, T. Mori, \u201cThermalization in open many-body systems based on eigenstate thermalization hypothesis\u201d, Physical Review E 101<\/strong> 042116 (2020).<\/li>\n
  • Shirai<\/u>, S. Todo, S. Miyashita, \u201cDynamical phase transition in Floquet optical bistable systems: An approach from finite-size quantum systems\u201d, Physical Review A 101<\/strong> 013809 (2020).<\/li>\n
  • Shirai<\/u>, T. Nakamura, \u201cMicroscopic description of yielding in glass by persistent homology\u201d, Journal of the Physical Society of Japan 88<\/strong> 074801 (2019).<\/li>\n
  • Shirai<\/u>, S. Todo, H. de Raedt, S. Miyashita, \u201cOptical bistability in a low-photon-density regime\u201d, Physical Review A 98<\/strong> 043802 (2018).<\/li>\n
  • Shirai<\/u>, T. Mori, S. Miyashita, \u201cFloquet-Gibbs state in open quantum systems\u201d, The European Physical Journal Special Topics 227<\/strong> 323 (2018).<\/li>\n
  • Shirai<\/u>, J. Thingna, T. Mori, S. Denisov, P. H\u00e4nggi, S. Miyashita, \u201cEffective Floquet-Gibbs states for dissipative quantum systems\u201d, New Journal of Physics 18<\/strong> 053008 (2016).<\/li>\n
  • Shirai<\/u>, T. Mori, \u201cConditions for emergence of the Floquet-Gibbs state in periodically driven open systems\u201d, Physical Review E 91<\/strong> 030101 (2015).<\/li>\n
  • Shirai<\/u>, T. Mori, and S. Miyashita, \u201cNovel Symmetry-broken phase in a driven cavity system in the thermodynamic limit\u201d, J. Phys. B 47<\/strong> 025501 (2013).<\/li>\n
  • S. Miyashita, Shirai<\/u>, T. Mori, H. de Raedt, S. Bertaina, I. Chiorescu, \u201cPhoton and spin dependence of the resonance line shape in the strong coupling regime\u201d, J. Phys. B 45<\/strong> 124010 (2012).<\/li>\n<\/ul>\n
    Other Interests<\/h5>\n

    Go (board game), Searching for cooking ingredients<\/p>\n

    Affiliated Academic Organizations<\/h5>\n

    The Physical Society of Japan
    \nIEEE<\/p>\n

    Awards<\/h5>\n

    2022\u5e74<\/strong>\uff1a16th Young Scientist Award of the Physical Society of Japan (division 11)<\/p>\n","protected":false},"excerpt":{"rendered":"

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